Vehicle-jacking apparatus

ABSTRACT

A hydraulic cylinder on a wheeled carriage vertically swings a lever. A chain suspended from the lever adjustably engages one end of a lift beam. The beam has a ground engaging roller at its opposite end, and a vehicle-engaging seat located between the ends of the beam rises as the lever tilts the beam to jack the vehicle from a point remote from the carriage.

United States Patent [72] Inventor [21 App]. No. [22] Filed [45] Patented [54] VEHlCLE-JACKING APPARATUS 3,059,785 10/1962 Buckeye 3,52l.860 7/1970 Zchrung 6 Claims, 3 Drawlng Figs.

[52] [1.8. CI 254/8 R Cl 360p 1/48 ABSTRACT: A hydraulic cylinder on a wheeled carriage ver Field Search 254/2- tically swings a lever. A chain suspended from the lever ad- 120 justably engages one end of a lift beam. The beam has a ground engaging roller at its opposite end, and a vehicle-en- [56] References Cited gaging seat located between the ends of the beam rises as the UNITED STATES PATENTS lever tilts the beam to jack the vehicle from a point remote 2,851,247 9/1958 Hilding 254/8 B from the carriage.

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I a 6 *Q J/ /u K 66 O /0 J l J 2 2 \E 27 VEHICLE-JACKING APPARATUS OUTLINE OF INVENTION The object of the invention is to permit the lifting or jacking up of a vehicle from a suitable point on the underside of the vehicle by means of a vertically operating jack located outside of the outline of the vehicle, either beyond the end or at the side of the vehicle, without the necessity of locating the jack under the vehicle and more closely adjacent to the desired point for applying lifting force to the vehicle. The drawings, of which there is one sheet, illustrate a preferred form of the jacking apparatus.

FIG. 1 is a side-elevational view of the apparatus in operative position.

FIG. 2 is a fragmentary cross-sectional view along the plane of the line 2-2 in FIG. 1.

FIG. 3 is a fragmentary, enlarged, elevational view taken along the plane of the line 3-3 in FIG. 1.

The jacking apparatus comprises a lift jack generally indicated at 1 and having a vertically swingable lifting lever 2. In the example illustrated the jack consists of a wheeled carriage 3 of rectangular cross section and a vertical upright 4 also of rectangular cross section welded to the rear or outer end of the base at 5. The front end of the base carries an axle 6 on which a pair of rubber-tired wheels 7 are mounted. The lower end of the upright has two downwardly extending arms 8 welded thereto as at 9 to support a rear ground engaging roller 10. The lever 2 is pivotally connected to the upper end of the upright at 11 by means of cars 12 welded to the sides of the lever which is a cylindrical tubular member.

A hydraulic cylinder 13 has its lower end pivotally connected at 14 between two gusset plates 15 welded into the connection between the base and the upright. The piston 16 of the cylinder is pivotally connected at 17 between ears l8 welded to the side of the lever. The cylinder 13 is operated by a hydraulic pump conventionally indicated at 19 and having a combined body and reservoir 20 welded to the side of the upright. A pump lever 21 mounted on top of the body actuates a piston 22 for delivering fluid under pressure through the hose 23 to the lower end of the cylinder.

As is more particularly illustrated in FIG. 3 the outer swingable end of the tubular lever 2 is cut off along a bevel at 24 and a semicircular wall 25 is secured in the lower one-half of the lever by welding as at 26. The wall 25 defines an upright slot 27 through which one link 28 of a chain may extend to an anchor link 29 located behind the end wall. Hanging links 30 in the chain extend to a hook 31 engageable with a lifting beam as will be described. The particular form of the jack 1 is a commercially available article and is not claimed as part of the invention except as it and similar jacks coact with the lifting beam.

The lifting beam generally indicated at 32 consists of a hollow tubular bar of rectangular cross section and is desirably of the order of 4 feet in length. A cross pin 33 is connected to the end of the beam by inclined sidearms 34 welded to the rear or outer end of the beam as at 35 to form a connection cooperative with the hook 31. The opposite end of the beam 32 has projecting cars 36 in the form of flat plates welded to the sides of the beam at 37 to support a short axle 38 of a small roller 39. The roller is similar to the roller 10 on the jack and is of the order of 2 inches in diameter.

Intermediate of the ends of the beam 32 there is provided an upstanding load-engaging seat 40. The seat 40 is a short section of the same tubular material as the beam 32 and is welded on top of the beam as at 41. Desirably, but not necessarily, a removable seat extension 42 is telescopically and removably positioned within the seat 40. A saddle 43 on the extension is adapted to engage a selected crossmember on the underside of the vehicle to be raised.

The jacking apparatus of the invention is designed for use on hard surfaces such as in service stations and garages for quickly and evenly jacking up vehicles without damage to bumpers or other arts of the vehicle which may not have sufficlent strength to e operated on by the ack book 3 or other vehicle jacks. The beam 32 is rolled under the vehicle from the side or end until the seat 40 or 42 is under a strong portion of the frame of the vehicle with the yoke 33 freely accessible beyond the outline of the vehicle. It is then a simple matter of adjusting the link of the lifting chain 30, engaging the hook 31 and operating the jack to lift the lever 2 and elevate the beam to the position indicated by the dotted lines at 328. Attention is called to the fact that as the lever 2 swings in an arc and the beam 32 swings in a divergent arc in elevating the beam, the roller 39 may move to the dotted line position at 398 so that the vehicle is firmly supported in its jacked and elevated position. Alternatively the wheeled jack 1 may move or both the jack and the beam roller 39 may move to compensate for any rolling movement of the vehicle while the vehicle is supported on the jack.

I claim:

1. Vehicle-jacking apparatus comprising a manually operable jack having a lifting member operated by force multiplying mechanism,

a chain depending from said lifting member and having a hook on its lower end,

a vehicle-lifting beam having a pin at one end adapted to be engaged by the hook on the jack, and having a ground-engaging portion on its other end,

and a vehicle-engaging seat on said beam located between the ends thereof.

2. Vehicle-jacking apparatus as defined in claim 1 in which the lifting member of said jack consists of an hydraulically actuated lever,

and in which said chain is adjustably engageable with the end of said lever.

3. Vehicle-jacking apparatus as defined in claim 2 in which said ground-engaging portion is a roller mounted on said beam.

4. Vehicle-jacking apparatus as defined in claim 3 in which said vehicle-engaging seat is an upwardly concave saddle projecting above the adjacent length of said beam.

5. Vehicle-jacking apparatus comprising an elongated beam having a ground-engaging element at one end,

side plates supporting a cross pin at the other end of said beam adapted to be engaged by a hook on the lifting element of a mechanical advantage jack,

and an upwardly concave vehicle-engaging seat on top of said beam located intermediate of the ends thereof.

6. Vehicle-jacking apparatus as defined in claim 5 in which said ground-engaging element is rotatable,

and in which said beam is an elongated bar of tubular metal of rectangular cross section,

Said seat being welded to a short section of the same material as said beam welded to the top of beam. 

1. Vehicle-jacking apparatus comprising a manually operable jack having a lifting member operated by force multiplying mechanism, a chain depending from said lifting member and having a hook on its lower end, a vehicle-lifting beam having a pin at one end adapted to be engaged by the hook on the jack, and having a ground-engaging portion on its other end, and a vehicle-engaging seat on said beam located between the ends thereof.
 2. Vehicle-jacking apparatus as defined in claim 1 in which the lifting member of said jack consists of an hydraulically actuated lever, and in which said chain is adjustably engageable with the end of said lever.
 3. Vehicle-jacking apparatus as defined in claim 2 in which said ground-engaging portion is a roller mounted on said beam.
 4. Vehicle-jacking apparatus as defined in claim 3 in which said vehicle-engaging seat is an upwardly concave saddle projecting above the adjacent length of said beam.
 5. Vehicle-jacking apparatus comprising an elongated beam having a ground-engaging element at one end, side plates supporting a cross pin at the other end of said beam adapted to be engaged by a hook on the lifting element of a mechanical advantage jack, and an upwardly concave vehicle-engaging seat on top of said beam located intermediate of the ends thereof.
 6. Vehicle-jacking apparatus as defined in claim 5 in which said ground-engaging element is rotatable, and in which said beam is an elongated bar of tubular metal of rectangular cross section, said seat being welded to a short section of the same material as said beam welded to the top of beam. 